Just open folder ( Android )

[chol0p 0]

 Hi all. I hope very much for your help. Is it possible to simply open a folder from application through a standard file manager? I save my images (photos from the camera) in the DCIM/MyFolder and I would like to add the ability for the user to open this folder from my application. So that when a button is pressed, he has a choice of applications (available file managers) through which he can open it. I will be grateful for help. Sorry, I'm using a translator. Thank you

[Mustafa ֍zgun 7]

Hi

apps targeting Android 10 and higher are given scoped access into external storage, or scoped storage.

Android 11 introduces changes and restrictions to enhance user privacy, including the following: Scoped storage enforcement: Access into external storage directories is limited to an app-specific directory and specific types of media that the app has created.

Open files using the Storage Access Framework  The SAF includes the following:

    Document provider: a content provider that lets a storage service, such as Google Drive, reveal the files it manages. A document provider is implemented as a subclass of the DocumentsProvider class. The document-provider schema is based on a traditional file hierarchy, though how your document provider physically stores data is up to you. The Android platform includes several built-in document providers, such as Downloads, Images, and Videos.
    Client app: a custom app that invokes the ACTION_CREATE_DOCUMENT, ACTION_OPEN_DOCUMENT, and ACTION_OPEN_DOCUMENT_TREE intent actions and receives the files returned by document providers.
    Picker: a system UI that lets users access documents from all document providers that satisfy the client app's search criteria. https://developer.android.com/static/images/providers/storage_picker.svg

Access documents and other files from shared storage

Sample project Delphi - Android Scoped Storage : Storage Access Framework SAF API

 

 

 

 

 

 

[Minox 7]

If you have the rights to access the "DCIM/MyFolder" folder, you could build a simple browser (via "System.IOUtils.TDirectory.GetFiles") yourself and display the files contained in a list. Or launch an "Intent" with "ACTION_GET_CONTENT", to open the system app

[chol0p 0]

On 5/25/2023 at 1:12 PM, Minox said:

If you have the rights to access the "DCIM/MyFolder" folder, you could build a simple browser (via "System.IOUtils.TDirectory.GetFiles") yourself and display the files contained in a list. Or launch an "Intent" with "ACTION_GET_CONTENT", to open the system app

Could you show an example how to implement this using "ACTION_GET_CONTENT"? I already tried this with "Intent" but I keep getting the error " exposed beyond app through intent.getdata() "

[Dave Nottage 557]

5 minutes ago, chol0p said:

I already tried this with "Intent" but I keep getting the error " exposed beyond app through intent.getdata() "

Please show your code

[Minox 7]

I use this:

uses Androidapi.JNI.GraphicsContentViewText,
     Androidapi.Helpers,
     System.Messaging,
     Androidapi.JNI.Net,
     Androidapi.JNI.App,

PROCEDURE TForm1.GetFileBrowser;
      VAR Intent  : JIntent;
          ReqCode : Integer;
    BEGIN
          ReqCode := 1000;

          Intent := TJIntent.Create;

          Intent.setType(StringToJString('*/*'));
          Intent.setAction(TJIntent.JavaClass.ACTION_GET_CONTENT);
          Intent.putExtra(TJIntent.JavaClass.EXTRA_ALLOW_MULTIPLE,true);

          TMessageManager.DefaultManager.SubscribeToMessage(TMessageResultNotification,
                          procedure(const Sender   : TObject;
                                    const aMessage : TMessage)
                                VAR msgRES : TMessageResultNotification;
                              begin
                                    msgRES:= TMessageResultNotification(aMessage);

                                    If msgRES.RequestCode=ReqCode Then
                                       if (msgRES.ResultCode=TJActivity.JavaClass.RESULT_OK) Then
                                           Begin

                                           URIfileTrn := msgRES.Value.getData(); //URI sing file selez

                                           If URIfileTrn=Nil Then //multiselez
                                              ClipDataF := msgRES.Value.getClipData;

                                           End;
                              end);

          TAndroidHelper.Activity.startActivityForResult(Intent, ReqCode);
    END;

and then via thread process the URI

[chol0p 0]

1 hour ago, Minox said:

I use this:

Thanks, but I just need to open the folder, without selecting the folder. Is it possible?

[Minox 7]

If your intention is to open the explorer automatically in a specific location, I don't think it's possible to do it with the system one. Third-party ones do it instead, but I've never faced the problem. This session could be a good start to understand if there is a possibility to do it.

Edited May 27, 2023 by Minox

[Grupo Datasoft 0]

On 5/27/2023 at 5:01 AM, Minox said:

I use this:

uses Androidapi.JNI.GraphicsContentViewText,
     Androidapi.Helpers,
     System.Messaging,
     Androidapi.JNI.Net,
     Androidapi.JNI.App,

PROCEDURE TForm1.GetFileBrowser;
      VAR Intent  : JIntent;
          ReqCode : Integer;
    BEGIN
          ReqCode := 1000;

          Intent := TJIntent.Create;

          Intent.setType(StringToJString('*/*'));
          Intent.setAction(TJIntent.JavaClass.ACTION_GET_CONTENT);
          Intent.putExtra(TJIntent.JavaClass.EXTRA_ALLOW_MULTIPLE,true);

          TMessageManager.DefaultManager.SubscribeToMessage(TMessageResultNotification,
                          procedure(const Sender   : TObject;
                                    const aMessage : TMessage)
                                VAR msgRES : TMessageResultNotification;
                              begin
                                    msgRES:= TMessageResultNotification(aMessage);

                                    If msgRES.RequestCode=ReqCode Then
                                       if (msgRES.ResultCode=TJActivity.JavaClass.RESULT_OK) Then
                                           Begin

                                           URIfileTrn := msgRES.Value.getData(); //URI sing file selez

                                           If URIfileTrn=Nil Then //multiselez
                                              ClipDataF := msgRES.Value.getClipData;

                                           End;
                              end);

          TAndroidHelper.Activity.startActivityForResult(Intent, ReqCode);
    END;

and then via thread process the URI

How get the selected file path an filename on this function? I need select a video file an load on my form. Tks for you help

[Minox 7]

       

          Try var LCursor : JCursor := TAndroidHelper.Context.getContentResolver().query(URIfileTrn,nil,nil,nil,nil);
              If LCursor=Nil Then Exit;
              LCursor.moveToFirst;
              var colIndex : Integer := LCursor.getColumnIndexOrThrow(TJOpenableColumns.JavaClass.DISPLAY_NAME);
              If colIndex<>-1 Then
                 Result := JStringToString(LCursor.getString(colIndex));
              Except
              Result := '';
          End;

with the latest OS, with the path you get you can't do anything with it, personally I download the file in the personal folder and use it

Edited June 14 by Minox